溶接凝固機構とその組織の特性(第 4 報) : アルミニウム薄板の TIG アークスポットにおける溶融池の凝固現象と形成組織の検討

概要

論文の詳細を見る
TIG arc spot welding was performed on thin sheets of aluminum with different chemical compositions. Migration of solid-liquid interface during weld solidification was observed with 16mm cine camera and the actual growth rates of the columnar grains were measured from the films. Then, the observed results were compared with the results calculated with the theory of the heat conduction and an attempt was made to explain the mechanism of the formation of the solidification structures by applying these results to the modern solidification theory. It was found that the growth rate increased as the growth proceeded into the nugget and that the result showed qualitatively good agreement with the result obtained with the theory of the heat conduction. The solidification theory and the construction mechanism of the solidification structure obtained in the unidirectional solidification were also applicable to the case of the weld solidification, when the growth rate was much larger.
社団法人溶接学会の論文
1971-01-25